I have a problem with the connection dropping between every send, possibly more.Just started happening with the upgrade to the board version 2.0.2. I revert back to 1.0.7 and everything goes back to working. Any help would be greatly appreciated.I have checked physical connections etc....

It would be very helpful if you could provide the sketch you are using that causes this issue. You can open an issue on Github with more details (like what type of device is connecting) and how the problem can be reproduced on Github: https://github.com/01org/corelibs-arduino101/issues